MovePlugin.cc

/*===========================================================================*\
*                                                                            *
*                              OpenFlipper                                   *
*      Copyright (C) 2001-2011 by Computer Graphics Group, RWTH Aachen       *
*                           www.openflipper.org                              *
*                                                                            *
*--------------------------------------------------------------------------- *
*  This file is part of OpenFlipper.                                         *
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/*===========================================================================*\
*                                                                            *
*   $Revision$                                                       *
*   $LastChangedBy$                                                *
*   $Date$                     *
*                                                                            *
\*===========================================================================*/

#include <QtGui>

#include "MovePlugin.hh"

#include <iostream>
#include <ACG/GL/GLState.hh>
#include <QStringList>
#include <ACG/QtScenegraph/QtTranslationManipulatorNode.hh>

#include <OpenFlipper/BasePlugin/PluginFunctions.hh>
#include <OpenFlipper/common/GlobalOptions.hh>

#include <MeshTools/MeshFunctions.hh>
#include <MeshTools/MeshInfoT.hh>

#ifdef USE_OPENMP
#include <omp.h>
#endif

#ifdef ENABLE_POLYLINE_SUPPORT
#include <ObjectTypes/PolyLine/PolyLine.hh>
#endif

#ifdef ENABLE_TSPLINEMESH_SUPPORT
#include <ObjectTypes/TSplineMesh/TSplineMesh.hh>
#endif

#ifdef ENABLE_SKELETON_SUPPORT
#include <ObjectTypes/Skeleton/Helper/SkeletonTransform.hh>
#endif

/** \brief Default Constructor
 *
 */
MovePlugin::MovePlugin() :
    placeAndSnapAction_(0),
    manMode_(QtTranslationManipulatorNode::TranslationRotation),
    contextAction_(0),
    toAllTargets_(0),
    placeMode_(false)
{
    manip_size_          = 1.0;
    manip_size_modifier_ = 1.0;

    selectionType_ = VERTEX;
    selectionConnected_ = false;

    axisA_ = 0;
    axisB_ = 1;

    hide_ = true;
    allTargets_ = false;
}

/** \brief Deconstructor
 *
 */
MovePlugin::~MovePlugin() {

	if(contextAction_) {
		delete contextAction_;
	}

	if(toAllTargets_) {
		delete toAllTargets_;
	}

	for(QList<movePropsWidget*>::iterator it = propsWindows_.begin();
		it != propsWindows_.end(); ++it) {

		if(*it) {
			delete *it;
		}
	}
}


/*******************************************************************************
        BaseInterface implementation
 *******************************************************************************/

/** \brief Initialization of the plugin when it is loaded by the core
 *
 */
void MovePlugin::pluginsInitialized() {

  //PICKMODES
  emit addPickMode("Separator");
  emit addHiddenPickMode("Move");
  emit setPickModeMouseTracking ("Move", true);
  emit addHiddenPickMode("MoveSelection");
  emit setPickModeMouseTracking ("MoveSelection", true);

  //KEYS
  emit registerKey (Qt::Key_Shift, Qt::ShiftModifier, tr("Manipulator rotation"), true);
  emit registerKey (Qt::Key_Shift, Qt::NoModifier, tr("Manipulator rotation"), true);
  emit registerKey (Qt::Key_Control, Qt::ControlModifier, tr("Resize"), true);
  emit registerKey (Qt::Key_Control, Qt::NoModifier, tr("Resize"), true);

  //SCRIPTING SLOT DESCRIPTIONS
  setDescriptions();

  // CONTEXT MENU
  toAllTargets_ = new QAction(tr("Apply to all targets"), this);
  toAllTargets_->setCheckable(true);
  toAllTargets_->setToolTip(tr("Apply transformation to all target objects"));
  toAllTargets_->setStatusTip( toAllTargets_->toolTip() );

  contextAction_ = new QAction(tr("Set properties"), this);
  contextAction_->setToolTip(tr("Set properties"));
  contextAction_->setStatusTip( contextAction_->toolTip() );
  contextAction_->setIcon(QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"move-properties.png") );
  
  contextActionHide_ = new QAction(tr("Hide Manipulator"), this);
  contextActionHide_->setToolTip(tr("Hide Manipulator"));
  contextActionHide_->setStatusTip( contextActionHide_->toolTip() );
  contextActionHide_->setIcon(QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"move-hide.png") );

  emit addContextMenuItem(toAllTargets_      , CONTEXTNODEMENU );
  emit addContextMenuItem(contextAction_     , CONTEXTNODEMENU );
  emit addContextMenuItem(contextActionHide_ , CONTEXTNODEMENU );

  connect( toAllTargets_  ,     SIGNAL(toggled(bool) ), this, SLOT(setAllTargets(bool)));
  connect( contextAction_ ,     SIGNAL( triggered() ),  this, SLOT(showProps()) );
  connect( contextActionHide_ , SIGNAL( triggered() ),  this, SLOT(hideManipulator()) );

  //TOOLBAR
  toolbar_ = new QToolBar(tr("Transform and Move"));

  toolBarActions_ = new QActionGroup(toolbar_);

  moveAction_ = new QAction(tr("<B>Move Object</B><br>Move an object in 3D"), toolBarActions_);
  moveAction_->setStatusTip(tr("Move object in 3D."));
  moveAction_->setIcon(QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"move-objects.png") );
  moveAction_->setCheckable(true);
  toolbar_->addAction(moveAction_);

  moveSelectionAction_ = new QAction(tr("<B>Move Selection</B><br>Move a selection on an object"), toolBarActions_);
  moveSelectionAction_->setStatusTip(tr("Move selections in 3D."));
  moveSelectionAction_->setIcon(QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"move-selections.png") );
  moveSelectionAction_->setCheckable(true);
  toolbar_->addAction(moveSelectionAction_);
  
  connect(toolBarActions_, SIGNAL(triggered(QAction*)), this, SLOT(slotSetMoveMode(QAction*)) );

  emit addToolbar(toolbar_);

  pickToolbar_ = new QToolBar(tr("Transform and Move"));
  pickToolbar_->setAttribute(Qt::WA_AlwaysShowToolTips, true);
  pickToolBarActions_ = new QActionGroup(pickToolbar_);
  pickToolBarActions_->setExclusive (false);

  placeAction_ = new QAction(tr("Place manipulator"), pickToolBarActions_);
  placeAction_->setStatusTip(tr("Place manipulator on object. <Doubleclick>"));
  placeAction_->setToolTip(tr("Place manipulator on object. <Doubleclick>"));
  placeAction_->setIcon(QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"move-place.png") );
  placeAction_->setCheckable(true);
  pickToolbar_->addAction(placeAction_);

  pickToolbar_->addSeparator ();

  rotateTranslateAction_ = new QAction(tr("Rotate/Translate object"), pickToolBarActions_);
  rotateTranslateAction_->setStatusTip(tr("Rotate/Translate object."));
  rotateTranslateAction_->setToolTip(tr("Rotate/Translate object."));
  rotateTranslateAction_->setIcon(QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"move-translaterotate.png") );
  rotateTranslateAction_->setCheckable(true);
  rotateTranslateAction_->setChecked(true);
  pickToolbar_->addAction(rotateTranslateAction_);

  resizeAction_ = new QAction(tr("Resize object"), pickToolBarActions_);
  resizeAction_->setStatusTip(tr("Resize object. <Control>"));
  resizeAction_->setToolTip(tr("Resize object. <Control>"));
  resizeAction_->setIcon(QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"move-resize.png") );
  resizeAction_->setCheckable(true);
  pickToolbar_->addAction(resizeAction_);

  pickToolbar_->addSeparator ();

  rotateManipAction_ = new QAction(tr("Rotate manipulator"), pickToolBarActions_);
  rotateManipAction_->setStatusTip(tr("Rotate manipulator. <Shift>"));
  rotateManipAction_->setToolTip(tr("Rotate manipulator. <Shift>"));
  rotateManipAction_->setIcon(QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"move-maniprotate.png") );
  rotateManipAction_->setCheckable(true);
  pickToolbar_->addAction(rotateManipAction_);

  placeAndSnapAction_ = new QAction(tr("Locally translate manipulator"), pickToolBarActions_);
  placeAndSnapAction_->setStatusTip(tr("Locally translate manipulator. Press and hold <Alt> for snapping."));
  placeAndSnapAction_->setIcon(QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"move-placeandsnap.png") );
  placeAndSnapAction_->setCheckable(true);
  pickToolbar_->addAction(placeAndSnapAction_);

  smallerManipAction_ = new QAction(tr("Decrease size of manipulator"), pickToolBarActions_);
  smallerManipAction_->setStatusTip(tr("Make manipulator smaller. <Mouse wheel up>"));
  smallerManipAction_->setToolTip(tr("Make manipulator smaller. <Mouse wheel up>"));
  smallerManipAction_->setIcon(QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"move-manipsmall.png") );
  smallerManipAction_->setCheckable(false);
  pickToolbar_->addAction(smallerManipAction_);

  biggerManipAction_ = new QAction(tr("Increase size of manipulator"), pickToolBarActions_);
  biggerManipAction_->setStatusTip(tr("Make manipulator bigger. <Mouse wheel down>"));
  biggerManipAction_->setToolTip(tr("Make manipulator bigger. <Mouse wheel down>"));
  biggerManipAction_->setIcon(QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"move-manipbig.png") );
  biggerManipAction_->setCheckable(false);
  pickToolbar_->addAction(biggerManipAction_);
  
  connect(pickToolBarActions_, SIGNAL(triggered(QAction*)), this, SLOT(slotPickToolbarAction(QAction*)) );

  emit setPickModeToolbar ("Move", pickToolbar_);
  emit setPickModeToolbar ("MoveSelection", pickToolbar_);
}


/*******************************************************************************
        ToolBoxInterface implementation
 *******************************************************************************/

void MovePlugin::initializePlugin()
{
   toolboxActive_ = false;
   tool_ = new moveToolbarWidget();

   connect(tool_->moveToOrigin,SIGNAL(clicked() ),this,SLOT(slotMoveToOrigin()));

   tool_->moveToOrigin->setIcon( QIcon(OpenFlipper::Options::iconDirStr() + OpenFlipper::Options::dirSeparator() + "moveToCOG.png") );
   tool_->moveToOrigin->setIconSize(QSize(48,48));

   connect(tool_->unifyBoundingBoxDiagonal,SIGNAL(clicked() ),this,SLOT(slotUnifyBoundingBoxDiagonal()));
   tool_->unifyBoundingBoxDiagonal->setIcon( QIcon(OpenFlipper::Options::iconDirStr() + OpenFlipper::Options::dirSeparator() + "unifyBB.png") );
   tool_->unifyBoundingBoxDiagonal->setIconSize(QSize(48,48));

   lastActiveManipulator_ = -1;

   toolIcon_ = new QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"move-toolBox.png");
   emit addToolbox( tr("Move") , tool_, toolIcon_ );
}


/*******************************************************************************
        MouseInterface implementation
 *******************************************************************************/

/** \brief MouseWheel event occured
 *
 * @param _event the event that occured
 */
void MovePlugin::slotMouseWheelEvent(QWheelEvent * _event, const std::string & /*_mode*/)
{
  // Skip execution if this is not our pick mode
  if( ( (PluginFunctions::pickMode() != "Move")
     && (PluginFunctions::pickMode() != "MoveSelection") )
    || PluginFunctions::actionMode() != Viewer::PickingMode)
    return;
  
  // compute the manipulator size modifier based on the mouse wheel change
  manip_size_modifier_ = manip_size_modifier_ - (float)_event->delta() / 120.0 * 0.1;
  
  // Resize all manipulators based on the modifier on all objects
  for ( PluginFunctions::ObjectIterator o_it(PluginFunctions::ALL_OBJECTS) ; o_it != PluginFunctions::objectsEnd(); ++o_it)
      o_it->manipulatorNode()->set_size(manip_size_ * manip_size_modifier_);

  // Redraw scene with updated manipulators
  emit updateView();
}


//------------------------------------------------------------------------------

/** \brief MousePress event occured
 *
 * @param _event the event that occured
 */
void MovePlugin::slotMouseEvent(QMouseEvent* _event) {
    if (((PluginFunctions::pickMode() == ("Move"))
      || (PluginFunctions::pickMode() == ("MoveSelection")))
            && PluginFunctions::actionMode() == Viewer::PickingMode) {

        if (_event->type() == QEvent::MouseButtonDblClick || (_event->type() == QEvent::MouseButtonPress
                && _event->button() == Qt::LeftButton && (placeAction_->isChecked() || placeMode_))) {

            bool snap = (placeMode_ && (PluginFunctions::pickMode() == ("MoveSelection")));

            placeManip(_event, snap);
            placeAction_->setChecked(false);
            updateManipulatorDialog();

            if (placeMode_) {
                manMode_ = QtTranslationManipulatorNode::TranslationRotation;

                for (PluginFunctions::ObjectIterator o_it(PluginFunctions::ALL_OBJECTS); o_it
                        != PluginFunctions::objectsEnd(); ++o_it)
                    if (o_it->manipPlaced())
                        o_it->manipulatorNode()->setMode(manMode_);

                resizeAction_->setChecked(false);
                rotateManipAction_->setChecked(false);
                rotateTranslateAction_->setChecked(true);
                placeAndSnapAction_->setChecked(false);
            }

            placeMode_ = false;
            return;

        } else if (placeMode_) {

            /*
             * Move manipulator along with cursor if placeAndSnap mode
             * is active. Snap to nearest geometry element (vertex, line, face center)
             * depending on which selection type is active.
             *
             */

            placeManip(_event, (PluginFunctions::pickMode() != ("Move")));
            updateManipulatorDialog();
            return;
        }

        // interaction
        ACG::SceneGraph::MouseEventAction action(_event,PluginFunctions::viewerProperties().glState());
        PluginFunctions::traverse(action);

        if (_event->buttons() == Qt::LeftButton)
          emit nodeVisibilityChanged(-1);

    }
}

/*******************************************************************************
        KeyInterface implementation
 *******************************************************************************/

void MovePlugin::slotKeyEvent (QKeyEvent* _event)
{
  if (_event->key() == Qt::Key_Control)
    setManipMode (QtTranslationManipulatorNode::Resize);
  else if (_event->key () == Qt::Key_Shift)
    setManipMode (QtTranslationManipulatorNode::LocalRotation);
}

//------------------------------------------------------------------------------

void MovePlugin::slotKeyReleaseEvent (QKeyEvent* _event)
{
  if ((_event->key() == Qt::Key_Control && manMode_ == QtTranslationManipulatorNode::Resize) ||
      (_event->key() == Qt::Key_Shift && manMode_ == QtTranslationManipulatorNode::LocalRotation))
    setManipMode (QtTranslationManipulatorNode::TranslationRotation);
}

/*******************************************************************************
        PickingInterface implementation
 *******************************************************************************/

/** \brief slot is called when the pickMode changed
 *
 * @param _mode new pickMode
 */
void MovePlugin::slotPickModeChanged( const std::string& _mode)
{
  moveAction_->setChecked(_mode == "Move");
  moveSelectionAction_->setChecked(_mode == "MoveSelection");

  hide_ = !(_mode == "Move" || _mode == "MoveSelection");

  showManipulators();

  if (!hide_)
  {
    switch (manMode_)
    {
      case QtTranslationManipulatorNode::Resize:
        PluginFunctions::setViewObjectMarker (PluginFunctions::defaultViewObjectMarker ());
        break;
      case QtTranslationManipulatorNode::LocalRotation:
        PluginFunctions::setViewObjectMarker (&objectMarker_);
        break;
      case QtTranslationManipulatorNode::Place:
        PluginFunctions::setViewObjectMarker (PluginFunctions::defaultViewObjectMarker ());
        break;
      case QtTranslationManipulatorNode::TranslationRotation:
        PluginFunctions::setViewObjectMarker (PluginFunctions::defaultViewObjectMarker ());
        break;
    }
  }
  else
    PluginFunctions::setViewObjectMarker (PluginFunctions::defaultViewObjectMarker ());
}


/*******************************************************************************
        MovePlugin implementation
 *******************************************************************************/

/** \brief Move object with given transformation matrix
 *
 * @param mat transformation matrix
 * @param _id id of the object
 */
void MovePlugin::moveObject(ACG::Matrix4x4d mat, int _id) {
  BaseObjectData* object;
  if ( ! PluginFunctions::getObject(_id,object) )
    return;

  if  ( object->dataType()  == DATA_TRIANGLE_MESH ) {
    transformMesh(mat , *PluginFunctions::triMesh(object) );
  } else  if  ( object->dataType()  == DATA_POLY_MESH ) {
    transformMesh(mat , *PluginFunctions::polyMesh(object) );
#ifdef ENABLE_TSPLINEMESH_SUPPORT
  } else  if  ( object->dataType()  == DATA_TSPLINE_MESH ) {
    transformMesh(mat , *PluginFunctions::tsplineMesh(object) );
#endif
#ifdef ENABLE_POLYLINE_SUPPORT
  } else  if  ( object->dataType()  == DATA_POLY_LINE ) {
    transformPolyLine(mat , *PluginFunctions::polyLine(object) );
#endif
#ifdef ENABLE_SKELETON_SUPPORT
  } else  if  ( object->dataType()  == DATA_SKELETON ) {
    transformSkeleton(mat , *PluginFunctions::skeleton(object) );
#endif
  } else  if  ( object->dataType()  == DATA_PLANE ) {
    PluginFunctions::planeNode(object)->transform(mat);
  } else {

    emit log(LOGERR,tr("moveObject called for unsupported Object Type"));
    return;
  }

  emit updatedObject(_id, UPDATE_GEOMETRY);
  emit createBackup(_id,"Move");
}


//------------------------------------------------------------------------------

/** \brief Move selection on an object with given transformation matrix
 *
 * Which Selection (Vertex, Edge, Face) is used is determined by the
 * current SelectionMode in SelectionPlugin.
 * If the Plugin is unable to communicate with SelectionPlugin, Vertex Selection is used.
 *
 * @param mat
 * @param _id
 */
void MovePlugin::moveSelection(ACG::Matrix4x4d mat, int _id) {

  if (selectionType_ == VERTEX)
    transformVertexSelection( _id , mat );
  else if (selectionType_ == FACE)
    transformFaceSelection( _id , mat );
  else if (selectionType_ == EDGE)
    transformEdgeSelection( _id , mat );

  emit updatedObject(_id, UPDATE_GEOMETRY);
//   emit createBackup(_id,"MoveSelection");
}

//------------------------------------------------------------------------------

/** \brief Set the manipulator manipulation mode
 *
 * @param _mode Mode
 */

void MovePlugin::setManipMode (QtTranslationManipulatorNode::ManipulatorMode _mode)
{
  if (_mode != manMode_)
  {
    manMode_ = _mode;
    if ((PluginFunctions::pickMode() == "Move" ) || (PluginFunctions::pickMode() == "MoveSelection" )) {
        for ( PluginFunctions::ObjectIterator o_it(PluginFunctions::ALL_OBJECTS) ;
              o_it != PluginFunctions::objectsEnd(); ++o_it)
           if ( o_it->manipPlaced() )
                o_it->manipulatorNode()->setMode (_mode);
      if (!hide_)
        switch (manMode_)
        {
          case QtTranslationManipulatorNode::Resize:
            PluginFunctions::setViewObjectMarker (PluginFunctions::defaultViewObjectMarker ());
            placeMode_ = false;
            break;
          case QtTranslationManipulatorNode::LocalRotation:
            PluginFunctions::setViewObjectMarker (&objectMarker_);
            placeMode_ = false;
            break;
          case QtTranslationManipulatorNode::Place:
            PluginFunctions::setViewObjectMarker (PluginFunctions::defaultViewObjectMarker ());
            placeMode_ = true;
            break;
          case QtTranslationManipulatorNode::TranslationRotation:
            PluginFunctions::setViewObjectMarker (PluginFunctions::defaultViewObjectMarker ());
            placeMode_ = false;
            break;
        }
    }
    switch (manMode_)
    {
      case QtTranslationManipulatorNode::Resize:
        resizeAction_->setChecked (true);
        rotateManipAction_->setChecked (false);
        rotateTranslateAction_->setChecked (false);
        placeAndSnapAction_->setChecked (false);
        break;
      case QtTranslationManipulatorNode::LocalRotation:
        resizeAction_->setChecked (false);
        rotateManipAction_->setChecked (true);
        rotateTranslateAction_->setChecked (false);
        placeAndSnapAction_->setChecked (false);
        break;
      case QtTranslationManipulatorNode::TranslationRotation:
        resizeAction_->setChecked (false);
        rotateManipAction_->setChecked (false);
        rotateTranslateAction_->setChecked (true);
        placeAndSnapAction_->setChecked (false);
        break;
      case QtTranslationManipulatorNode::Place:
        resizeAction_->setChecked (false);
        rotateManipAction_->setChecked (false);
        rotateTranslateAction_->setChecked (false);
        placeAndSnapAction_->setChecked (true);
        break;
    }
  }
}

//------------------------------------------------------------------------------

/** \brief Hide context menu entry when right clicking on node other than manipulator node
 *
 * @param _nodeId Identifier of node that has been clicked
 */
void MovePlugin::slotUpdateContextMenuNode(int _nodeId) {

    ACG::SceneGraph::BaseNode* node = ACG::SceneGraph::find_node(PluginFunctions::getSceneGraphRootNode(), _nodeId);

    if (node == 0)
        return;

    if (node->className() != "QtTranslationManipulatorNode") {
        contextAction_->setVisible(false);
    } else {
        contextAction_->setVisible(true);
    }
}

//------------------------------------------------------------------------------

/** \brief move the object when its manipulator moves
 *
 * @param _node the manipulator node
 * @param _event the mouse event
 */
void MovePlugin::manipulatorMoved( QtTranslationManipulatorNode* _node , QMouseEvent* _event) {

  // React on event only in move mode
  if ( PluginFunctions::pickMode() != "Move"
    && PluginFunctions::pickMode() != "MoveSelection" )
    return;
  
  OpenFlipper::Options::redrawDisabled( true );

  // Apply changes only on Release for moveMode and after every movement in MoveSelection Mode
  if ( !placeMode_ && ((_event->type() == QEvent::MouseButtonRelease) || 
             (PluginFunctions::pickMode() != "Move" && _event->buttons() != Qt::NoButton)) ) {

    int objectId = _node->getIdentifier();

    ACG::Matrix4x4d mat;
    mat.identity();
    mat = _node->matrix();

    // Reset Node
    _node->loadIdentity();
    _node->set_center(mat.transform_point(_node->center()));

    // move the object which corresponds to the manipulator
    if (PluginFunctions::pickMode() == "Move")
      moveObject( mat, objectId );
    else if (PluginFunctions::pickMode() == "MoveSelection")
      moveSelection( mat, objectId );

    // move all other targets without manipulator
    if(allTargets_) {
      for (PluginFunctions::ObjectIterator o_it(PluginFunctions::TARGET_OBJECTS); o_it
          != PluginFunctions::objectsEnd(); ++o_it) {
        if ((o_it->id() != objectId) && !o_it->manipulatorNode()->visible()) { // If it has its own manipulator active, dont move it

          // move the object which corresponds to the manipulator
          if (PluginFunctions::pickMode() == "Move")
            moveObject( mat, o_it->id() );
          else if (PluginFunctions::pickMode() == "MoveSelection")
            moveSelection( mat, o_it->id() );
        }
      }
    }

    lastActiveManipulator_ = objectId;
    updateManipulatorDialog();
  }

  OpenFlipper::Options::redrawDisabled( false );

}


//------------------------------------------------------------------------------

/** \brief update object when its manipulator changes position
 *
 * @param _node the manipulator node
 */
void MovePlugin::ManipulatorPositionChanged(QtTranslationManipulatorNode* _node ) {

  // Position has been changed of the manipulator by a direct function
  int objectId = _node->getIdentifier();

  if ( objectId > 0 ){

    BaseObjectData* object;
    PluginFunctions::getObject(objectId,object);

    // Assume that it has a good position now
    object->manipPlaced( true );
  }

  // Show manipulator only if in Move mode
  if ( PluginFunctions::pickMode() == "Move" )
    _node->show();

  lastActiveManipulator_ = objectId;
  updateManipulatorDialog();

}


//------------------------------------------------------------------------------

/** \brief Place and show the Manipulator
 *
 * @param _event  mouseEvent that occured
 */
void MovePlugin::placeManip(QMouseEvent * _event, bool _snap) {
    unsigned int node_idx, target_idx;
    OpenMesh::Vec3d hitPoint;
    BaseObjectData* object;

    bool successfullyPicked = false;

    int data = -1;
    
    /*
     * Snap manipulator to nearest geometry
     * element depending on which selection type is
     * active.
     */
    if (_snap) {
 
          successfullyPicked = PluginFunctions::scenegraphPick(ACG::SceneGraph::PICK_FACE, _event->pos(), node_idx,
                               target_idx, &hitPoint) && PluginFunctions::getPickedObject(node_idx, object);

          if(!successfullyPicked) {
              //emit log(LOGWARN, tr("Picking failed"));
              return;
          }

          if (selectionType_ == VERTEX) {
              if ( object->dataType(DATA_TRIANGLE_MESH) ) {
                  hitPoint = getNearestVertex(PluginFunctions::triMesh(object), target_idx, hitPoint);
              } else if ( object->dataType(DATA_POLY_MESH) ) {
                  hitPoint = getNearestVertex(PluginFunctions::polyMesh(object), target_idx, hitPoint);
#ifdef ENABLE_TSPLINEMESH_SUPPORT
              } else if ( object->dataType(DATA_TSPLINE_MESH) ) {
                  hitPoint = getNearestVertex(PluginFunctions::tsplineMesh(object), target_idx, hitPoint);
#endif
              }
          } else if (selectionType_ == EDGE) {
              if ( object->dataType(DATA_TRIANGLE_MESH) ) {
                  hitPoint = getNearestEdge(PluginFunctions::triMesh(object), target_idx, hitPoint);
              } else if ( object->dataType(DATA_POLY_MESH) ) {
                  hitPoint = getNearestEdge(PluginFunctions::polyMesh(object), target_idx, hitPoint);
#ifdef ENABLE_TSPLINEMESH_SUPPORT
              } else if ( object->dataType(DATA_TSPLINE_MESH) ) {
                  hitPoint = getNearestEdge(PluginFunctions::tsplineMesh(object), target_idx, hitPoint);
#endif
              }
          } else if (selectionType_ == FACE) {
              if ( object->dataType(DATA_TRIANGLE_MESH) ) {
                  hitPoint = getNearestFace(PluginFunctions::triMesh(object), target_idx, hitPoint);
              } else if ( object->dataType(DATA_POLY_MESH) ) {
                  hitPoint = getNearestFace(PluginFunctions::polyMesh(object), target_idx, hitPoint);
#ifdef ENABLE_TSPLINEMESH_SUPPORT
              } else if ( object->dataType(DATA_TSPLINE_MESH) ) {
                  hitPoint = getNearestFace(PluginFunctions::tsplineMesh(object), target_idx, hitPoint);
#endif
              }
          }

    } else {
        successfullyPicked = PluginFunctions::scenegraphPick(ACG::SceneGraph::PICK_ANYTHING, _event->pos(), node_idx,
                target_idx, &hitPoint) && PluginFunctions::getPickedObject(node_idx, object);
    }

    if (successfullyPicked) {

        object->manipPlaced(true);

        if (data != -1)
          object->manipulatorNode()->setData( data );

        object->manipulatorNode()->loadIdentity();
        object->manipulatorNode()->set_center(hitPoint);
        object->manipulatorNode()->set_draw_cylinder(true);
        object->manipulatorNode()->set_autosize(QtTranslationManipulatorNode::Once);
        object->manipulatorNode()->set_size(manip_size_ * manip_size_modifier_);
        object->manipulatorNode()->setMode(manMode_);
        object->manipulatorNode()->show();

        object->manipulatorNode()->apply_transformation(PluginFunctions::pickMode() == "Move");

        // Disconnect a previously connected Signal
        disconnect(object->manipulatorNode() , SIGNAL(manipulatorMoved(QtTranslationManipulatorNode*,QMouseEvent*)),
                   this , SLOT( manipulatorMoved(QtTranslationManipulatorNode*,QMouseEvent*)));
                
        disconnect(object->manipulatorNode() , SIGNAL(positionChanged(QtTranslationManipulatorNode*)),
                  this , SLOT( ManipulatorPositionChanged(QtTranslationManipulatorNode*)));
        
        // Reconnect the signals.
        connect(object->manipulatorNode() , SIGNAL(manipulatorMoved(QtTranslationManipulatorNode*,QMouseEvent*)),
                this , SLOT( manipulatorMoved(QtTranslationManipulatorNode*,QMouseEvent*)));

        connect(object->manipulatorNode() , SIGNAL(positionChanged(QtTranslationManipulatorNode*)),
                this , SLOT( ManipulatorPositionChanged(QtTranslationManipulatorNode*)));

        lastActiveManipulator_ = object->id();

        emit updateView();
       
        bool found = false;
        
        for (uint i=0; i < activeManipulators_.size(); i++)
          if ( activeManipulators_[i] == object->id() ){
            found = true;
            break;
          }
        
        if ( !found )
          activeManipulators_.push_back( object->id() );

    } else {
        //emit log(LOGWARN, tr("Picking failed"));
    }
}


//------------------------------------------------------------------------------

/** \brief Checks if the manipulators should be visible or not
 *
 */
void MovePlugin::showManipulators( )
{

  if (!hide_ && (toolboxActive_ || (PluginFunctions::pickMode() == "Move")
                                || (PluginFunctions::pickMode() == "MoveSelection"))) {
    
    for (uint i=0; i < activeManipulators_.size(); i++){
      
      BaseObjectData* obj = 0;
      
      PluginFunctions::getObject( activeManipulators_[i], obj );
      
      if (obj != 0 && obj->manipPlaced()) {
        obj->manipulatorNode()->show();
        obj->manipulatorNode()->apply_transformation( PluginFunctions::pickMode() == "Move" );
        emit nodeVisibilityChanged(obj->id());
      }
    }

  } else {
    
    for (uint i=0; i < activeManipulators_.size(); i++){
      
      BaseObjectData* obj = 0;
      
      PluginFunctions::getObject( activeManipulators_[i], obj );
      
      if ( obj != 0 ) {
        obj->manipulatorNode()->hide();
        emit nodeVisibilityChanged(obj->id());
      }
    }
  }

  emit updateView();

}

//------------------------------------------------------------------------------

/** \brief Get Dialog Widget that contains the button
 *
 * @param _but Reference to QPushButton object that has been pressed
 */
movePropsWidget* MovePlugin::getDialogFromButton(QPushButton* _but) {

    if(_but == 0) return 0;
    return dynamic_cast<movePropsWidget*>((((_but->parentWidget())->parentWidget())->parentWidget()));
}
//------------------------------------------------------------------------------

/** \brief Position of manipulator in tab changed
 *
 */
void MovePlugin::slotSetPosition() {

    QPushButton* but = dynamic_cast<QPushButton*>(QObject::sender());
    movePropsWidget* pW = getDialogFromButton(but);
    if(pW == 0) return;

    TriMesh::Point newpos;

    bool ok = false;
    newpos[0] =  (pW->nposx->text()).toDouble(&ok);
    if ( !ok ) { emit log(LOGERR,tr("Wrong Format for X Coordinate")); return; }
    newpos[1] =  (pW->nposy->text()).toDouble(&ok);
    if ( !ok ) { emit log(LOGERR,tr("Wrong Format for Y Coordinate")); return; }
    newpos[2] =  (pW->nposz->text()).toDouble(&ok);
    if ( !ok ) { emit log(LOGERR,tr("Wrong Format for Z Coordinate")); return; }

    BaseObjectData* object;
    if ( PluginFunctions::getObject(lastActiveManipulator_ , object) ) {
	if (  object->manipulatorNode()->visible() )
	    object->manipulatorNode()->set_center( newpos );
	updateManipulatorDialog();
	emit updateView();
    }
}


//------------------------------------------------------------------------------

/** \brief Toggle the first axis for changing direction in tab
 *
 */
void MovePlugin::slotToggleAxisA() {

    QPushButton* but = dynamic_cast<QPushButton*>(QObject::sender());
    movePropsWidget* pW = getDialogFromButton(but);
    if(pW == 0) return;

    axisA_ = (axisA_ + 1) % 3;

    if (axisA_ == axisB_)
	axisA_ = (axisA_ + 1) % 3;

    switch(axisA_){
	case 0: pW->axisAButton->setText(tr("X Direction")); break;
	case 1: pW->axisAButton->setText(tr("Y Direction")); break;
	case 2: pW->axisAButton->setText(tr("Z Direction")); break;
	default: break;
    }
}


//------------------------------------------------------------------------------

/** \brief Toggle the second axis for changing direction in tab
 *
 */
void MovePlugin::slotToggleAxisB() {

    QPushButton* but = dynamic_cast<QPushButton*>(QObject::sender());
    movePropsWidget* pW = getDialogFromButton(but);
    if(pW == 0) return;

    axisB_ = (axisB_ + 1) % 3;

    if (axisA_ == axisB_)
	axisB_ = (axisB_ + 1) % 3;

    switch(axisB_){
	case 0: pW->axisBButton->setText(tr("X Direction")); break;
	case 1: pW->axisBButton->setText(tr("Y Direction")); break;
	case 2: pW->axisBButton->setText(tr("Z Direction")); break;
	default: break;
    }
}


//------------------------------------------------------------------------------

/** \brief Set Direction of manipulator in tab changed
 *
 */
void MovePlugin::slotSetDirection() {

    QPushButton* but = dynamic_cast<QPushButton*>(QObject::sender());
    movePropsWidget* pW = getDialogFromButton(but);
    if(pW == 0) return;

    ACG::Vec3d newdirA,newdirB;
    ACG::Vec3d dirX,dirY;
    ACG::Vec3d dirZ(0.0,0.0,0.0);

    bool ok = false;
    newdirA[0] =  (pW->ndirAx->text()).toDouble(&ok);
    if ( !ok ) { emit log(LOGERR,tr("Wrong Format for X Coordinate"));  return; }
    newdirA[1] =  (pW->ndirAy->text()).toDouble(&ok);
    if ( !ok ) { emit log(LOGERR,tr("Wrong Format for Y Coordinate")); return; }
    newdirA[2] =  (pW->ndirAz->text()).toDouble(&ok);
    if ( !ok ) { emit log(LOGERR,tr("Wrong Format for Z Coordinate")); return; }

    newdirB[0] =  (pW->ndirBx->text()).toDouble(&ok);
    if ( !ok ) { emit log(LOGERR,tr("Wrong Format for X Coordinate"));  return; }
    newdirB[1] =  (pW->ndirBy->text()).toDouble(&ok);
    if ( !ok ) { emit log(LOGERR,tr("Wrong Format for Y Coordinate")); return; }
    newdirB[2] =  (pW->ndirBz->text()).toDouble(&ok);
    if ( !ok ) { emit log(LOGERR,tr("Wrong Format for Z Coordinate")); return; }

    bool xAxis = false;
    bool yAxis = false;

    switch(axisA_){
	case  0: dirX = newdirA; xAxis = true; break;
	case  1: dirY = newdirA; yAxis = true; break;
	default: dirZ = newdirA; break;
    }

    switch(axisB_){
	case  0: dirX = newdirB; xAxis = true; break;
	case  1: dirY = newdirB; yAxis = true; break;
	default: dirZ = newdirB; break;
    }

    if (!xAxis)
	dirX = dirY % dirZ;

    if (!yAxis)
	dirY = dirX % dirZ;


    if ( (dirX | dirY) != 0.0){
	emit log(LOGERR,tr("The axes of the new direction have to be orthogonal"));
	return;
    }

//    // Apply to All Target Objects
//     if ( pW->targetObjects->isChecked() ) {
// 	for ( PluginFunctions::ObjectIterator o_it(PluginFunctions::TARGET_OBJECTS) ;
//              o_it PluginFunctions::objectsEnd(); ++o_it){
//
// 	    o_it->manipulatorNode()->set_direction( dirX, dirY );
// 	}
//     }

    
    BaseObjectData* object = 0;
    PluginFunctions::getObject(pW->getBaseObjectDataId(),object);
    if ( object != 0 ) {
        if (  object->manipulatorNode()->visible() ){

            object->manipulatorNode()->set_direction( dirX, dirY );
	}
    } else return;

    updateManipulatorDialog();
    emit updateView();
}


//------------------------------------------------------------------------------

/** \brief perform a translation for Manipulator in tab
 *
 */
void MovePlugin::slotTranslation() {

    QPushButton* but = dynamic_cast<QPushButton*>(QObject::sender());
    movePropsWidget* pW = getDialogFromButton(but);
    if(pW == 0) return;

    ACG::Vec3d translation;

    bool ok = false;
    translation[0] =  (pW->translationX->text()).toDouble(&ok);
    if ( !ok ) { emit log(LOGERR,tr("Wrong Format for X Coordinate"));  return; }
    translation[1] =  (pW->translationY->text()).toDouble(&ok);
    if ( !ok ) { emit log(LOGERR,tr("Wrong Format for Y Coordinate")); return; }
    translation[2] =  (pW->translationZ->text()).toDouble(&ok);
    if ( !ok ) { emit log(LOGERR,tr("Wrong Format for Z Coordinate")); return; }

//	// Apply to All Target Objects
//	if ( pW->targetObjects->isChecked() ) {
//
//		int manipcount = 0; // Check how many of the target meshes have an visible manipulator
//		int targets = 0; // Count the number of target meshes
//		for ( PluginFunctions::ObjectIterator o_it(PluginFunctions::TARGET_OBJECTS); o_it != PluginFunctions::objectsEnd(); ++o_it) {
//			++targets;
//			if ( ! o_it->manipulatorNode()->hidden() ) {
//				++ manipcount;
//			}
//		}
//
//		if (manipcount == 0 ) // No manipulator -> no translation
//		return;
//
//		for ( PluginFunctions::ObjectIterator o_it(PluginFunctions::TARGET_OBJECTS,DataType( DATA_TRIANGLE_MESH | DATA_POLY_MESH ));
//				o_it != PluginFunctions::objectsEnd(); ++o_it) {
//			if ( manipcount > 1 ) { // Use manipulator direction for each target mesh
//				if ( o_it->manipulatorNode()->hidden() )
//				continue;
//			}
//
//			translate( o_it->id() , translation );
//
//			o_it->manipulatorNode()->set_center( o_it->manipulatorNode()->center() + translation );
//			emit createBackup(o_it->id(),"Translation");
//			emit updatedObject(o_it->id());
//		}
//
//	}

        BaseObjectData* object = 0;
        PluginFunctions::getObject(pW->getBaseObjectDataId(),object);

	if (object != 0) {
		if (object->manipulatorNode()->visible()) {

			translate(object->id(), translation);

			object->manipulatorNode()->set_center(
					object->manipulatorNode()->center() + translation);
			emit createBackup(object->id(), "Translation");
			emit updatedObject(object->id(), UPDATE_GEOMETRY);